Expert Quality socket set manufactured from chrome vanadium steel hardened and tempered with a polished finish. The unique hollow socket technology of the Draper Expert 'Go Through' ratchet and sockets is ideal for long fixings. The sockets are edge driven. This allows a fixing to pass through the head and avoid the depth restriction of conventional sockets and ratchets. Packed in blow mould carrying case and display sleeve.Contents:.13 'Go Through' sockets size 10, 11, 12, 13, 14, 15. 16, 17, 18, 19, 20, 21, 22mm reversible fine tooth ratchet 3 extension bars 38, 75, 150mm 2 socket converters 20mm x 1/4'' sq dr, 20mm x 3/8'' sq dr